unit 1 revision 1

digital images are formed by small dots called ....................................

• bits

• dot matrix

• pixels

• pixies

(a)   is when the design of devices change making them similar to one another.

This interface uses a list of options rather than typing commands into the system.

• Command line

• graphical user

• gesture

• menu driven

(a)   interface consists of a pointer , windows , icons and menus

This type of user interface is most suitable at a fast food cashier computer.

• menu driven

• command line

• graphical user

• voice

what are the two types of barcodes ?

(a)  

The microphone converts sound from (a)   data.

which biometric scanner is the most expensive?

• retina scanner

• fingerprint scanner

• iris scanner

• voice recognition

What is an advantage of using a laser printer over an inkjet printer ?

• using cartridges of ink

• it is smaller

• the quality of prints are higher

• it is inexpensive

A drawback of using a laser printer ......

• high quality prints

• it is expensive

• less noise compared to other types

• high volume print jobs can be done